linux-kernel - Re: [PATCH bpf-next 2/4] bpf: Implement bpf_local

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Date:   Tue, 26 May 2020 22:08:23 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     KP Singh <kpsingh@...omium.org>
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        bpf@...r.kernel.org, linux-security-module@...r.kernel.org,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        James Morris <jmorris@...ei.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Martin KaFai Lau <kafai@...com>,
        Florent Revest <revest@...omium.org>
Subject: Re: [PATCH bpf-next 2/4] bpf: Implement bpf_local_storage for inodes

On Tue, May 26, 2020 at 06:33:34PM +0200, KP Singh wrote:
> From: KP Singh <kpsingh@...gle.com>
> 
> Similar to bpf_local_storage for sockets, add local storage for inodes.
> The life-cycle of storage is managed with the life-cycle of the inode.
> i.e. the storage is destroyed along with the owning inode.
> 
> Since, the intention is to use this in LSM programs, the destruction is
> done after security_inode_free in __destroy_inode.

NAK onbloating the inode structure.  Please find an out of line way
to store your information.